From e9cb190ad4cea8e6fd24afb973c5007b9a439bc9 Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Fri, 14 Jul 2017 10:15:00 +0800 Subject: [PATCH] ivshmem: Convert to DEFINE_PROP_LINK Unlike the usual object_property_add_link() invocations in other devices, ivshmem checks the "is mapped" state of the backend in addition to qdev_prop_allow_set_link_before_realize. To convert it without specializing DEFINE_PROP_LINK which always uses the qdev callback, move the extra check to device realize time. Signed-off-by: Fam Zheng Message-Id: <20170714021509.23681-12-famz@redhat.com> Signed-off-by: Paolo Bonzini --- hw/misc/ivshmem.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index 731f3c1d4f..a58f9ee579 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -1009,18 +1009,6 @@ static const TypeInfo ivshmem_common_info = { .class_init = ivshmem_common_class_init, }; -static void ivshmem_check_memdev_is_busy(const Object *obj, const char *name, - Object *val, Error **errp) -{ - if (host_memory_backend_is_mapped(MEMORY_BACKEND(val))) { - char *path = object_get_canonical_path_component(val); - error_setg(errp, "can't use already busy memdev: %s", path); - g_free(path); - } else { - qdev_prop_allow_set_link_before_realize(obj, name, val, errp); - } -} - static const VMStateDescription ivshmem_plain_vmsd = { .name = TYPE_IVSHMEM_PLAIN, .version_id = 0, @@ -1037,6 +1025,8 @@ static const VMStateDescription ivshmem_plain_vmsd = { static Property ivshmem_plain_properties[] = { DEFINE_PROP_ON_OFF_AUTO("master", IVShmemState, master, ON_OFF_AUTO_OFF), + DEFINE_PROP_LINK("memdev", IVShmemState, hostmem, TYPE_MEMORY_BACKEND, + HostMemoryBackend *), DEFINE_PROP_END_OF_LIST(), }; @@ -1044,11 +1034,6 @@ static void ivshmem_plain_init(Object *obj) { IVShmemState *s = IVSHMEM_PLAIN(obj); - object_property_add_link(obj, "memdev", TYPE_MEMORY_BACKEND, - (Object **)&s->hostmem, - ivshmem_check_memdev_is_busy, - OBJ_PROP_LINK_UNREF_ON_RELEASE, - &error_abort); s->not_legacy_32bit = 1; } @@ -1059,6 +1044,11 @@ static void ivshmem_plain_realize(PCIDevice *dev, Error **errp) if (!s->hostmem) { error_setg(errp, "You must specify a 'memdev'"); return; + } else if (host_memory_backend_is_mapped(s->hostmem)) { + char *path = object_get_canonical_path_component(OBJECT(s->hostmem)); + error_setg(errp, "can't use already busy memdev: %s", path); + g_free(path); + return; } ivshmem_common_realize(dev, errp); -- 2.11.4.GIT